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Finding the Fourth Proportional to 308,721.70, 463,082.55 and 109,267.30

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Solution

The fourth proportional to 308,721.70, 463,082.55 and 109,267.30 is: 163,900.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,721.70 : 463,082.55 = 109,267.30 : x
  2. Step 2: Convert to fraction form
    308,721.70/463,082.55 = 109,267.30/x
  3. Step 3: Cross multiply
    308,721.70x = 463,082.55 × 109,267.30
  4. Step 4: Simplify right side
    308,721.70x = 50,599,779,915.62
  5. Step 5: Solve for x
    x = 50,599,779,915.62/308,721.70
  6. Step 6: Final answer
    x = 163,900.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.